This thread is intended for future reference, as I’ve discovered that this issue is quite common in older LX570 models.
The problem began after I had the ABS system repaired, specifically the link rod connecting the brake pedal to the ABS unit beneath the driver-side instrument cluster. After pressing the brake too hard to achieve proper braking, I decided to address the issue. The experienced technician replaced the link rod, and the brakes improved. However, from that day forward, my vehicle started to randomly restart while driving, particularly when I applied the brakes lightly. This caused the instrument cluster and infotainment system to restart unexpectedly.
I returned to the same workshop, but the technician was baffled since I couldn’t replicate the error. I visited several other workshops without success. Eventually, I decided to conduct my own research, particularly on IH8MUD.COM.
I compiled a list of checkpoints as follows:
While I’m not jumping to conclusions, I strongly believe the issue stemmed from the loose harnesses, which caused intermittent connections when braking due to inertia.
If anyone else encounters a similar issue, feel free to follow the steps I took!
The problem began after I had the ABS system repaired, specifically the link rod connecting the brake pedal to the ABS unit beneath the driver-side instrument cluster. After pressing the brake too hard to achieve proper braking, I decided to address the issue. The experienced technician replaced the link rod, and the brakes improved. However, from that day forward, my vehicle started to randomly restart while driving, particularly when I applied the brakes lightly. This caused the instrument cluster and infotainment system to restart unexpectedly.
I returned to the same workshop, but the technician was baffled since I couldn’t replicate the error. I visited several other workshops without success. Eventually, I decided to conduct my own research, particularly on IH8MUD.COM.
I compiled a list of checkpoints as follows:
- Cleaned the battery terminals, which had some corrosion/mould, using WD-40.
- Checked all ground points, which were fine.
- Went under the instrument cluster and ensured all harness clips were securely connected.
- Inspected all fuses, which were also intact.
- Most importantly, I noticed some harnesses connected to the brake pedal and other components were loose because the technician hadn’t 'Clipped' them properly to prevent their movement during the ride, so I fixed those.
While I’m not jumping to conclusions, I strongly believe the issue stemmed from the loose harnesses, which caused intermittent connections when braking due to inertia.
If anyone else encounters a similar issue, feel free to follow the steps I took!
